Titanium ore acidolysis method through sulfuric acid process

A sulfuric acid method and acid hydrolysis technology, applied in the direction of titanium dioxide, titanium oxide/hydroxide, etc., can solve the problems of inconvenient pumping of premixed slurry, affecting the acid hydrolysis rate during the acid hydrolysis process, and complex process, and achieve the improvement of premixed slurry. The effect of mixing effect, reducing energy consumption and simplifying the process
CN101514031AActive Publication Date: 2009-08-26XIANGYANG LOMON TITANIUM IND CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
XIANGYANG LOMON TITANIUM IND CO LTD
Publication Date
2009-08-26

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Abstract

The invention relates to an improved method for the titanium ore acidolysis through sulfuric acid in the process of producing titanium white through a sulfuric acid process. The method is characterized in that: the method comprises the following steps: firstly premixing dilute waste acid produced by titanium white production after concentration and trash extraction with the titanium ore; and then adding the premixed ore slurry into an acidolysis pot, and then adding concentrated sulfuric acid so as to initiate a main reaction through the dilution heat produced by the added concentrated acid. The method has the advantages of: 1) improving the reutilization amount of titanium white waste acid and reducing the cost of concentrated waste acid; 2) removing a sulfuric acid cooling link so as to simplify the operation; 3) improving the operational conditions of premixing and acidolysis so as to reduce the risk of technical accidents; and 4) strengthening the premixing intensity, improving the premixing effect, so that the acidolysis reaction is sufficient and the acidolysis rate is remarkably improved.
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Description

technical field

[0001] The invention relates to an improved method for sulfuric acid acid hydrolysis of titanium ore, in particular to a production method for returning waste sulfuric acid produced in the sulfuric acid titanium dioxide production process to the sulfuric acid titanium dioxide acid hydrolysis process. technical background

[0002] Titanium dioxide is a high-quality white pigment widely used in coatings, plastics, paper, ink, chemical fiber, food, electronics and other fields. In 2006, the world's output exceeded 5 million tons. It is an important inorganic chemical product. The production of titanium dioxide usually uses two production processes: sulfuric acid method and chlorination method. The sulfuric acid method titanium dioxide process began around the 1920s. Because the raw materials are easy to obtain and the technology is relatively mature, it is widely used in China. However, the sulfuric acid method titanium dioxide production The comprehensive utili...

Claims

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